Smart sensor and method using the same

Abstract

The present disclosure provides a smart sensor. The smart sensor includes at least one sensing module, a positioning module, a memory, a processor, and an alerting module connected to each other. The sensing module is configured to record a relative distance and a relative velocity between a user and people, or between the user and objects. The positioning module is configured to record a position signal of the user, and calculating the self-velocity of the user through the position signal. The memory is configured to store the relative distance, the relative velocity, the self-velocity, and a judging method. The processor determines whether the user is in a dangerous position based on the relative distance, the relative velocity, the self-velocity, and the judging method.

What is claimed is: 
     
         1 . A smart sensor, comprising:
 at least one sensing module, configured to record a relative distance and a relative velocity between a user and people, or between the user and objects;   a positioning module, electrically connected to the at least one sensing module, and configured to record a position signal of the user, and calculate a self-velocity of the user through the position signal;   a memory, electrically connected to the positioning module, and configured to store the relative distance, the relative velocity, the self-velocity, and a judging method;   a processor, electrically connected to the memory, and configured to determine whether the user is in a dangerous position based on the relative distance, the relative velocity, the self-velocity, and the judging method; and   an alerting module, electrically connected to the processor, and configured to send a warning signal.   
     
     
         2 . The smart sensor of  claim 1 , wherein the at least one sensing module comprises an ultrasonic sensor, an infrared sensor, or combination thereof. 
     
     
         3 . The smart sensor of  claim 1 , wherein the position signal of the positioning module is obtained through a built-in global positioning system. 
     
     
         4 . The smart sensor of  claim 1 , wherein the position signal of the positioning module is obtained through an external satellite positioning device. 
     
     
         5 . The smart sensor of  claim 1 , wherein the alerting module comprises a vibrator unit, a display unit, an audio unit, or combinations thereof. 
     
     
         6 . The smart sensor of  claim 1 , further comprising:
 a casing, having a plurality of surfaces, wherein the at least one sensing module is disposed on at least one of the surfaces of the casing.   
     
     
         7 . A method of using a smart sensor, comprising:
 recording at least one relative distance and at least one relative velocity between a user and people, or between the user and objects through a sensing module;   recording a self-velocity of the user through a positioning module;   determining whether the user is in a dangerous position based on the at least one relative distance, the at least one relative velocity, the self-velocity through a processor; and   sending a warning signal through an alerting module when it is judged that the user is in the dangerous position.   
     
     
         8 . The method of using the smart sensor of  claim 7 , wherein:
 the sensing module records the at least one relative distance and the at least one relative velocity through an ultrasonic sensor or an infrared sensor.   
     
     
         9 . The method of using the smart sensor of  claim 7 , wherein:
 the positioning module records the self-velocity of the user through calculating a position signal of the user, wherein the position signal is from a built-in global positioning system or an external satellite positioning device.   
     
     
         10 . The method of using the smart sensor of  claim 7 , wherein the warning signal of the alerting module is sent through a vibrator unit, a display unit, an audio unit, or combinations thereof.